下片作者描写的是梧桐夜雨,其实反映出女子彻夜难眠。()
A. 对
B. 错
Low prices can drive competition 1______________.Dumping is considered a 2________________ pricing practice.The 3______________ involves adding a certain percentage.The company is being sued because it was pricing 4_________________.
环式力传感器与柱式相比,其特点是应力分布变化大,且有正有负,便于接成差动电桥。
A. 对
B. 错
正温度系数热敏电阻的电阻随温度升高而增大,所以高温时热敏电阻温度系数大,灵敏度高,故常用于高温测量。
A. 对
B. 错